feat: Warn when CPU with AVX/AVX2 support is used

src/main.rs

@@ -8,6 +8,7 @@ use breakwater::{
 };
 use clap::Parser;
 use env_logger::Env;
+use log::warn;
 use std::sync::Arc;
 use tokio::sync::{broadcast, mpsc};
 #[cfg(feature = "vnc")]
@@ -21,6 +22,15 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     env_logger::Builder::from_env(Env::default().default_filter_or("info")).init();
     let args = Args::parse();
 
+    #[cfg(target_arch = "x86_64")]
+    {
+        if !is_x86_feature_detected!("avx2") {
+            warn!("Your CPU does not support AVX2. Consider using a CPU supporting AVX2 for best performance");
+        } else if !is_x86_feature_detected!("avx") {
+            warn!("Your CPU does not support AVX. Consider using a CPU supporting AVX2 (or at least AVX) for best performance");
+        }
+    }
+
     let fb = Arc::new(FrameBuffer::new(args.width, args.height));
 
     // If we make the channel to big, stats will start to lag behind